<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区域 -->
      <div class="avater_box">
        <img src="../assets/logo.png" alt="" />
      </div>
      <!-- 登录表单区 -->
      <el-form
        label-width="0px"
        class="login_form"
        :model="loginForm"
        :rules="loginFormRules"
        ref="loginFormRef"
      >
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input
            prefix-icon="iconfont icon-user"
            v-model="loginForm.username"
          >
          </el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            prefix-icon="iconfont icon-3702mima"
            v-model="loginForm.password"
            type="password"
          ></el-input>
        </el-form-item>
        <!-- 按钮 -->
        <div class="btn">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </div>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  name: "Login",
  components: {},
  data() {
    return {
      // 登录表单的数据绑定对象
      loginForm: {
        username: "admin",
        password: "123456",
      },
      loginFormRules: {
        username: [
          { required: true, message: "请输入用户名", trigger: "blur" },
          { min: 3, max: 10, message: "长度在3到10个字符", trigger: "blur" },
        ],
        password: [
          { required: true, message: "请输入密码", trigger: "blur" },
          { min: 6, max: 15, message: "长度在6到15个字符", trigger: "blur" },
        ],
      },
    };
  },
  methods: {
    resetLoginForm() {
      this.$refs.loginFormRef.resetFields();
    },
    login() {
      this.$refs.loginFormRef.validate(async (valid) => {
        if (!valid) return;
        const { data: res } = await this.$http.post("/login", this.loginForm);
        if (res.meta.status !== 200) return this.$message.error("登录失败");
        this.$message.success("登录成功");
        // 登录成功后将token存到sessionStorage中
        window.sessionStorage.setItem("token", res.data.token);
        // 再跳转到home页面
        this.$router.push("/home");
      });
    },
  },
};
</script>
<style lang='less' scoped>
.login_container {
  background-color: #264b6b;
  height: 100%;
  .login_box {
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    .avater_box {
      height: 130px;
      width: 130px;
      position: absolute;
      left: 50%;
      transform: translate(-50%, -50%);
      border-radius: 50%;
      background-color: #fff;
      padding: 10px;
      box-shadow: 0 0 10px #ddd;
      border: 1px solid #eee;
      img {
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color: #eee;
      }
    }
  }
}
.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 30px;
  box-sizing: border-box;
}
.btn {
  display: flex;
  justify-content: flex-end;
}
</style>